Adjustable cultivator



May s, 1923,

l,4i54,225" v.1. B. SWAN ADJUSTABLE CULTIVATOR` ATT Patented May S, 1923..

JoHN'B. SWAN, or DENVER, coLoRDo,

.ASDSIGNOR 0F ONE-HALF TO LOUIS CSEMICZSKY, 0F DENVER, COLORADO.

.ADJUSTABLE CULTIYATOR.

Application l'ed March 5, 1921.

To all whom t may concern e it known that I,.JoHN B. SWAN, a citizen of the United States, residing at enver, in the county of Denver and State of Colorado, have invented new and useful Improvements in, Adjustable Cultivators,

. of which the following is a specification.

he present invention is directed to improvements in adjustable cultivators, and more particularly to one of the hand type.

he primar object of the invention is to provide a cu tivator constructed in such manner that the teeth carrying frames may easily and uickly adjusted angularly with respect to t e head, whereby the teeth may be positioned to cultivate the plantsat different stages 'of cultivation.

A further object of the invention is to provide a cultivator of this character wherein the teeth carrying frames can be moved to the desired position in a quick and simple manner, and held firmly in the adjusted positions. t

A still further object of the invention is to provide a cultivator having means whereby the teeth may be easily and quickly removed from the frames in oase it is desired to, 1bstitute ones of different1 forms, or to replace a broken one.

With/ these and other objects in view, this invention'resides in the novel features of construction, formation,` combination and arrangement of parts to be hereinafter more fully described, claimed and iillustrated in the accompanying drawing, in whiohrl.'

Figure 1 is a plan view of the device Figure 2 is a side elevation.

Figure 3 is a sectional view on line .3-3 of Fig. l. f

Figure 4 is a sectional View on line 4 4 of Fig. 3.

Figure 5 is a sectional view on the line 5-5 of Fig. 1.

Figure 6 is a perspective View of the sleeve.

Figure 7 isa sectional View on line 7-7 of Fi 1.

ligure 8 is a sectional view on line 8-8 or" Fig. 1.

Referring' to the drawing,`1 designates an elongated sheet metal head, which is preferably of the shape illustrated. The sides of the head are engaged between semi-oircul`ar plates 2,' said plates being pivotally connect -the upper surface of formed Serial No. 449,986.

eclto the head through the medium of-the bolts 3, which are equipped with winged clamping nuts 4. t

Located on each side of the head 1 are frames 5, and since these frames are identical in construction, the description of one will Suiiice forv both. Each frame consists of upper and lower front and rear bars 6. and 7 respectively,v the inner ends of which are pivotally connected to the plates 2 by bolts 8 equipped with winged clamping nuts 9. The outer ends of the bars 6 and 7 are pivotally connected on opposite faces of a strip 10'by bolts 11 having winged clamping nuts 12 thereon, said bolts also serving to pivotally connect the strip 13, which rests on the bars 6,- with the bars 7 and strip 10, the strip 13 having a rearwardly projecting end'lfi, in which are perforations 15, the purpose of which will appear later.

The vteeth 16 have their shanlrs ,17 disposed between the bars 6 and 7 of thejranies 5, and transversely thereof. in order to pivotally connect the ShanksI 17 ,between said hars split pins 18 arc passed therethrougl'i, as clearly shown inAFig, 5. These pins can be conveniently rem vcd when it is desired to interchange tl. 'teeth and shanlrs. l In addition to theteeth 16 there is a. supplemental tooth 19 having the shank 20 thereof1 engaged with the under surface of the head l. The rear end of the shank 2O terminates in an 11p-standing lug'21 for detachably engaging a perforation 22 formed in said head. A bolt 23 is engaged in the head and has a hook 24 for engaging `the shank 20 in advance of the lug. yThe winged clamping nut 25 Acarried by the bolt 23 serves todraw Ithe hook 24 in binding engagement with the shank 20, and thus holds said shank tightly Qolzunped against the under surface ci the head 1.

The rear end of the head terminates in a t split collar 26 having cars 27 carried there` by, and engaged in said ears is a clamping bolt 28 which is operable 'to contract the collar to cause the same to ifirmly' clamp the handle 29.

A metallic strip able manner longitudinally oi the handle 2&1 Slida-ble on the handle is afslleye 31, the npper portion of which is fari ing which is shaped to receive the 30 is secured in any suitld with a hous- Contact with the' sides of the strip and prevents the -sleevefrom turning on the handle,

but at the same time permits the same toslide `freely.

The forward .end of thesleeve 3l -is provided with diametrieally arranged ears 323.

-Links 311 are employed and have theinrear ends pivotally engaged with said ears, and

their forward ends similarly engaged in the pertorat-ions l5 of the ends le.

A Set screw' is Carried by the housing 32, and'vis'adapted to impinge against the strip 30 to hold the sleeve 31 in adjusted positions on the handle, said strip servingv to prevent the serew from marring the'wooden han die.

lt is obvious that when the sleeve 31 is in the full lineposition, as shown in Fig. l, that the frames 5 will vbe in direct alineinent with each other, whereas when thesleeve is moved to either dotted line position said Jframes will. be moved to -ang'ularly disposed positions. r-lhi's is readily ae'eoinlilished since the Shanks lare pivotallyv connected to the bars 6 and 7, and the bars in turn pivotaily connected to the head -through the' medium of the plates 2. It will be ot course apparent that as soon as the s leevef is moved on the handle swinging moven'ient will. be imparted tothe frames through the `medium ot" the links 34, and st'r'ips'l, thus swinging them to the desired positions to perform proper cultivation of the soil.

The frames 5 can `of Course be swung` to positions other than those shown in dotted lines in Fig. l, but for the sake of illustration, the positions shownv are suiiieient. l

Owing to the tact that' the bars 6 and .7 arel pivotally 'Connected attheir inner, and

outer ends, the saine will move towards each other when thejtran'ies are swung out of alinement.providing that the Clamping bolts are'tightlyu clamped and the bolts 8and ll loose. r'hus the teeth are prevented from assuining positions detrin'iental to proper eultivation. For inst-ance, when the frames are in the forward dotted vline position the soil will he directed outwardly, and the supplemental toth will cultivate the soil between the inner ends of the trames Of' Course if the bolts 3 are tight and the bolts 8 and ll loose the bars (3 andv 7 ot the iframes will approach each other when swung in one direc-` tion and move away from each other when swung in another direction. i The dotted line position shown in the drawing merely illustrate the positions et the ha1s"\vhen the bolts 8 are loose and the boltsfi and 1l. tie'ht,

lt is-to be understood that the'. present showing and idescription disclose only one speci-fie embodiment ofiny present invention, and that other forms and modifications are included within lthe spirit and scope thereof, as expressed in the appended claim.

l,Vhat is claimed is A, -eultivator ot the class described oom prising a head; plates pivotally eonnerted with said head; means for regulating the position of saidoplates' in felation to `said head; vtrames pivotally connected to said plates` audv means tor regulating' the position oit said l'ranres in relation to said plates.

In testimony whereoic I have hereunto set my hand in presence of two'subscribingwitnessesi" w g JOHN l5. SVVN. iVitnessesi SUnLIvAn Y. JonNso-N, EMIL SnriirsoN. 

